title: Mass spectrometry.
mesh_terms: D002853:Chromatography, Liquid; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D011506:Proteins / Q000032:analysis*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation / Q000379:methods; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000295:instrumentation / Q000379:methods
chemical_list: D011506:Proteins